A few weeks ago I bought a 9A tool room lathe UMD with 42 bed. It seems to be a model manufactured between 1953 and 1954 according to the Serial No.

Message 1 of 6
, Mar 2 5:35 PM

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A few weeks ago I bought a 9A tool room lathe UMD with 42" bed.

It seems to be a model manufactured between 1953 and 1954 according to the Serial No. Unfortunately it lost its taper attachment. It was missing a few parts that I already had in my spare box. The overall condition of the machine is very good. With a test mandrel between centres, a dial indicator moves a max of 0.001" (lathe able to perform work plus or minus 0.002" over the full length). The bed is very clean, only a few dints around the headstock. I am preparing the bed for a full re-scrape that I expect to take about one month by evenings (I am not working every night on it). It will be my 2nd lathe rebuild. (My 10K rear drive is almost perfect). I am in the process of checking the tools I used in the scraping process for the other lathe.

I mam investigating conversion to V belt. (take the V belts from my 10K). I have seen a few occurrences on ebay and Youtube of UMD with V belt configuration. The issue I am facing is that Link belts 5/8" wide are riding just above the top of the pulley. The other issue associated to these belts is that it seems to be extremely difficult to put the belt on the large pulley on the headstock and there might be interference with the back gear pulley shaft when basck gear is engaged. On the rear drive 10K I have I don't face this issue as I am using a continuous V belt

Did anyone make similar observations and find a corrective action? Substitute belt?

I am also investigating the conversion to large dials. Many years ago, I recall an article in Home shop Machinist there was an article written by somebody that made a telescopic taper attachment for 9/10K South Bend lathes. In this article he was explaining how to convert to large dials. I currently have all the components required but I ned to change the bearings on the cross feed assembly. Does anybody have a bearing No for substitute? I checked the SKF catalog and cannot find anything that would suit the need. (On SB part List it is Bearing AS841R1)

Guy Cadrin

Chris

There are 7 parts to this large dial vid that s based on Steve Wells design plans. This is part 1. Chris ... From: carbure2003 Subject:

Message 2 of 6
, Mar 2 7:45 PM

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There are 7 parts to this large dial vid that's based on Steve Wells design plans. This is part 1.

It seems to be a model manufactured between 1953 and 1954 according to the Serial No. Unfortunately it lost its taper attachment. It was missing a few parts that I already had in my spare box. The overall condition of the machine is very good. With a test mandrel between centres, a dial indicator moves a max of 0.001" (lathe able to perform work plus or minus 0.002" over the full length). The bed is very clean, only a few dints around the headstock. I am preparing the bed for a full re-scrape that I expect to take about one month by evenings (I am not working every night on it). It will be my 2nd lathe rebuild. (My 10K rear drive is almost perfect). I am in the process of checking the tools I used in the scraping process for the other lathe.

I mam investigating conversion to V belt. (take the V belts from my 10K). I have seen a few occurrences on ebay and Youtube of UMD
with V belt configuration. The issue I am facing is that Link belts 5/8" wide are riding just above the top of the pulley. The other issue associated to these belts is that it seems to be extremely difficult to put the belt on the large pulley on the headstock and there might be interference with the back gear pulley shaft when basck gear is engaged. On the rear drive 10K I have I don't face this issue as I am using a continuous V belt

Did anyone make similar observations and find a corrective action? Substitute belt?

I am also investigating the conversion to large dials. Many years ago, I recall an article in Home shop Machinist there was an article written by somebody that made a telescopic taper attachment for 9/10K South Bend lathes. In this article he was explaining how to convert to large dials. I currently have all the components required but I ned to change the bearings on the cross feed assembly. Does anybody have a bearing No for
substitute? I checked the SKF catalog and cannot find anything that would suit the need. (On SB part List it is Bearing AS841R1)

Guy Cadrin

Jim B.

... Guy. The bearings you need are made by Boston Gear. The are the same OD and ID but are just a bit thicker. You will need to machine something to use them.

Message 3 of 6
, Mar 2 7:51 PM

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>Does anybody have a bearing No for substitute?

Guy.
The bearings you need are made by Boston Gear.
The are the same OD and ID but are just a bit thicker. You will need to machine something to use them.
There are two notes in the files section on converting both the cross and compound dials. The part number should be in thse notes. I did not find them.
If they are not there I can search the BG catalog. BG only sells through distributors. MSC is one.
Let me know if you find them. I have used them on my 405 and Heavy 10.

It seems to be a model manufactured between 1953 and 1954 according to the Serial No. Unfortunately it lost its taper attachment. It was missing a few parts that I already had in my spare box. The overall condition of the machine is very good. With a test mandrel between centres, a dial indicator moves a max of 0.001" (lathe able to perform work plus or minus 0.002" over the full length). The bed is very clean, only a few dints around the headstock. I am preparing the bed for a full re-scrape that I expect to take about one month by evenings (I am not working every night on it). It will be my 2nd lathe rebuild. (My 10K rear drive is almost perfect). I am in the process of checking the tools I used in the scraping process for the other lathe.

I mam investigating conversion to V belt. (take the V belts from my 10K). I have seen a few occurrences on ebay and Youtube of UMD with V belt configuration. The issue I am facing is that Link belts 5/8" wide are riding just above the top of the pulley. The other issue associated to these belts is that it seems to be extremely difficult to put the belt on the large pulley on the headstock and there might be interference with the back gear pulley shaft when basck gear is engaged. On the rear drive 10K I have I don't face this issue as I am using a continuous V belt

Did anyone make similar observations and find a corrective action? Substitute belt?

I am also investigating the conversion to large dials. Many years ago, I recall an article in Home shop Machinist there was an article written by somebody that made a telescopic taper attachment for 9/10K South Bend lathes. In this article he was explaining how to convert to large dials. I currently have all the components required but I ned to change the bearings on the cross feed assembly. Does anybody have a bearing No for substitute? I checked the SKF catalog and cannot find anything that would suit the need. (On SB part List it is Bearing AS841R1)

Guy Cadrin

Jim B
Sent from my DROID RAZR MAXX

Chris

Damn! I forgot the link! http://www.youtube.com/watch?feature=player_detailpage&v=2BJ6_8Xk1IU Chris This email has been sent by the Moderator: ... From:

I am also investigating the conversion to large dials. Many years ago, I recall an article in Home shop Machinist there was an article written by somebody that made a telescopic taper attachment for 9/10K South Bend lathes. In this article he was explaining how to convert to large dials. I currently have all the components required but I ned to change the bearings on the cross feed assembly. Does anybody have a bearing No for substitute? I checked the SKF catalog and cannot find anything that would suit the need. (On SB part List it is Bearing AS841R1)

Guy Cadrin

Jim B.

The notes are on the southbendlathe group. Jim B Sent from my DROID RAZR MAXX

Message 5 of 6
, Mar 2 7:57 PM

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The notes are on the southbendlathe group.
Jim B
Sent from my DROID RAZR MAXX

Steve Wells

Hi Guy, Hope you are doing well. I would really be interested in seeing the telescopic taper conversion if you can take pictures through the project that would

Message 6 of 6
, Mar 3 5:13 PM

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Hi Guy,

Hope you are doing well.

I would really be interested in seeing the
telescopic taper conversion if you can take pictures through the project that
would be great.

Im going to try to post some new content to the
website and that sounds like a great read.

The bearings you need for the gear side of the
handle shaft is Boston Gear 17195, I order them from MSC and their part number
is 03548591,

this is for a Bearing set that includes 2 flat
washers, you can follow the SBL instructions for refit but I consider these the
drop in replacement,

although you do need to remove material to refit,
it's a minor job as the closer fitting is in the dial/handle and front CF
sleeve.

In the front bushing and under the sleeve you can
use the same bearing set (17195) or you can use an INA TC613 flat needle bearing
and the matching INA

TWA613 flat washers, the MSC part numers for these
are (1) 03380896 and (2) 03381068. The INA set is the bearing to use under
the compound dial too.

Hope That helped.

and PS...I have a large dial handle blank
that has the gear pre-cut, the shaft is the full OD of the Gear blank, so it has
to be turned to size. $30.00.

It
seems to be a model manufactured between 1953 and 1954 according to the Serial
No. Unfortunately it lost its taper attachment. It was missing a few parts
that I already had in my spare box. The overall condition of the machine is
very good. With a test mandrel between centres, a dial indicator moves a max
of 0.001" (lathe able to perform work plus or minus 0.002" over the full
length). The bed is very clean, only a few dints around the headstock. I am
preparing the bed for a full re-scrape that I expect to take about one month
by evenings (I am not working every night on it). It will be my 2nd lathe
rebuild. (My 10K rear drive is almost perfect). I am in the process of
checking the tools I used in the scraping process for the other
lathe.

I mam investigating conversion to V belt. (take the V belts from
my 10K). I have seen a few occurrences on ebay and Youtube of UMD with V belt
configuration. The issue I am facing is that Link belts 5/8" wide are riding
just above the top of the pulley. The other issue associated to these belts is
that it seems to be extremely difficult to put the belt on the large pulley on
the headstock and there might be interference with the back gear pulley shaft
when basck gear is engaged. On the rear drive 10K I have I don't face this
issue as I am using a continuous V belt

Did anyone make similar
observations and find a corrective action? Substitute belt?

I am also
investigating the conversion to large dials. Many years ago, I recall an
article in Home shop Machinist there was an article written by somebody that
made a telescopic taper attachment for 9/10K South Bend lathes. In this
article he was explaining how to convert to large dials. I currently have all
the components required but I ned to change the bearings on the cross feed
assembly. Does anybody have a bearing No for substitute? I checked the SKF
catalog and cannot find anything that would suit the need. (On SB part List it
is Bearing AS841R1)

Guy Cadrin

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